CO2 Proof Tubing — 10m Roll

For aquarists setting up multi-tank CO2 systems, routing CO2 over long distances, or simply wanting to stock a reliable supply of CO2-proof tubing, this 10-metre roll offers excellent value. Made from CO2-resistant polyurethane, it provides minimal gas permeation across its length — a critical property that standard silicone or PVC tubing fails to provide. The 4mm inner diameter is the industry standard for aquarium CO2 systems and fits all common barbed fittings, bubble counters, check valves, diffusers, and solenoid outlets. The roll format allows the aquarist to cut custom lengths as needed, with surplus neatly stored for future use.